---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/glossary/mx-record#article
headline: Mail Exchanger record (MX)
description: "*Internet standard*. A DNS record that maps the hostname in a domain that accepts email for the domain."
url: https://www.twilio.com/docs/glossary/mx-record
inLanguage: en
dateModified: 2026-05-06T13:22:30.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# Mail Exchanger record (MX)

*Internet standard*. A DNS record that maps the hostname in a domain that accepts email for the domain.

The `MX` records associated with a domain routes email over the [Simple Mail Transfer Protocol][smtp] (SMTP).

## Related entries

* [Canonical Name record (CNAME)][cname]
* [Domain Name System (DNS)][dns]
* [Fully Qualified Domain Name][fqdn]
* [Simple Mail Transfer Protocol][smtp]

[smtp]: /docs/glossary/smtp/

[cname]: /docs/glossary/cname

[dns]: /docs/glossary/dns

[fqdn]: /docs/glossary/fqdn